kennedy



D. A. KENNEDY.

Bakers Oven.

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WILLIAM WADSWORTHQAND E# D. MURRAY, 0F SAME PLACE.

Letters Patent No. 92,84Oclated July 20, 1869.

IMPROVEMENT 1N ROTARYv ovens. i

The Schedule referred to in these-Letters Patent and making part bf the same.

To all 'whom it Ima/y concern Beit known that I, D. A. KENNEDY, of Darien, in the county of Walworth, and State of Wisconsin, have invented a new and. improved Rotary Oven; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the -art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is-a vertical section of my improved oven, taken through the line y y, fig. 2.

Figure 2 is a horizontal section of the same, taken through the line x zalig. l, part of the rotating platform being broken away.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish a simple convenient, andeii'ective oven, which shall'be so constructed and arranged as to do its work better and witlrless expenditure Aof' fuel than the ovens con-- structed in theordinary manner; and

1t consists in the construction and combination of various partsV of the oven, as hereinafter more fully described. l

A is the wall of the oven, which is made of brick, and circular in form. l

The wall A is made with a shoulder or ofi-set, a', at a suitable distance below its top, as shown in iig. 1.

The shoulder a may beplated with iron, to form -a smooth Way for the wheels B, and thus diminish iction.

C is vertical shaif't, firmly and securely secured in place in the centre of the oven, as shown in figs.A l and 2.

To the shaft C, a little below 'the horizontal lplane of the shoulder a', is iirmly attached a collar, D, having a circular groove formed upon its upper side or ace.

E is a collar, placed and revolving loosely upon the shaftl C, and which has a circular groove formed in its lower side, correspondingr in forni and position with the groove in the stationary collar D.-

F are balls, placed between the collars D and E, in the grooves in said collars, to diminish the friction rcaused by the revolution of the collar E.

The upper side of the collar E is grooved or channelled radially, to receive the inner endsof 'the radial arms G, which extend out to the shoulder a, and have journals formed upon their outer ends to receive the wheels B, which roll along the said; shoulder a'.

The outer ends of the radial aims G are kept in their proper relative positions by being attached to a ring,.rim, o1 band, H, as Shown in figs. 1 and' 2.

I is the oven-plate or bottom, which is made in sec-v tions, as shown in fig. 2, and is securely attached to the arms G, so as to be carried around with said arms.

Holes may be formed in the plate I, near its outer edge, to receive an iron hookorhandle,.for revolving platform or oven-bottom, when desired.

The middle part of the'plate I is cut away, as shown in-iigs. 1 and 2, to allow the heat to circulate freely through the-open part of the oven.`

J is the arched roof of the oven, which rests upon the radial rafters K, the outer ends of -which are supported by the wall A, and the inner ends of which are connected with the= collar L, placed upon and supported by the central vertical shaft C, asshown'in fig. 1. This construction 'allows ythe arched roof to be made flatter than is possible when the arch is made wholly self-supporting.-

M are the lire-chambers;

N are the grates;v and O are the ash-pits;

The fire-chambers M are diverging, and are each made with two or more diveiging ilues, P,so as to introduee, the heat equally into all parts of the oven, thus insuring its being heated evenly.

The lire-arches should be covered with earth to the top of the iues l?, to retain the heat and insure its equal distribution.

Q is the chimney-flue, thel draught through which is regulatedI orentirely stopped, as desired, by the damper R, to' which is attached a rod, S, passing out at the front of' the oven, for convenience in ,operating v the said damper.Y

The ash-pits 0,' fire-chambers M, and oven-'opening 1.2 are al1 provided with door T, which slide in groove in the iron frames U, which are laid in the wall A- of ,the oven.

Having thusdescribed my invention, l

I claim as new, and desire 'to secure by Letters Patent- 1.Y The stationary grooved collar D, friction-balls F, revolving grooved collar E, radial arms G, rim H, and plate I, in combination with eachother, and with the stationary central shaft G and shoulder al of the wall A, substantially as herein shown'and described, and for the purpose set forth.

, 2. The combination of the friction-wheels or rollers B with the arms 4Gr and lim H, either or both, and shoulder al ofthe wall A, substantialiy as herein shown and described, for the purpose set forth.

' D. A..KENNEDY. Witnesses: O. H. GILBERT,

J. L. SUTHERLAND. 

